Daily Dispersion Outlook
Issued by NWS Pendleton, OR

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000
AUUS46 KPDT 311100
DDOPDT

DAILY DISPERSION OUTLOOK
NATIONAL WEATHER SERVICE PENDLETON OR
400 AM PDT THU JUL 31 2014

*** AIR DISPERSION CATEGORIES:   GOOD, FAIR, POOR ***

FOR THE COLUMBIA BASIN FROM PENDLETON TO WALLA WALLA AND PASCO

                              7:00 AM             AFTERNOON
SURFACE WINDS                 S 3-7 MPH.          SW 4-9 MPH.
TRANSPORT WINDS               S 3-7 MPH.          SW 5-10 MPH.
MIXING HEIGHT                 NEAR SURFACE.       9000 FT MSL.
DISPERSION CATEGORY           POOR.               FAIR.
OUTLOOK FOR FRI AUG 1         FAIR.

VENTILATION INDEX (CATEGORY)  25 (POOR).          295 (POOR).
OUTLOOK FOR FRI AUG 1         308 (FAIR).

FOR THE UPPER YAKIMA VALLEY INCLUDING YAKIMA...UNION GAP...
SELAH...AND NACHES AREA

                              7:00 AM             AFTERNOON
SURFACE WINDS                 NW 5-10 MPH.        NW 5-10 MPH.
TRANSPORT WINDS               NW 5-10 MPH.        SW 7-13 MPH.
MIXING HEIGHT                 NEAR SURFACE.       10500 FT MSL.
DISPERSION CATEGORY           POOR.               GOOD.
OUTLOOK FOR FRI AUG 1         FAIR.

VENTILATION INDEX (CATEGORY)  25 (POOR).          483 (FAIR).
OUTLOOK FOR FRI AUG 1         440 (FAIR).

FOR THE GRANDE RONDE RIVER VALLEY

                              7:00 AM             AFTERNOON
SURFACE WINDS                 SW 0-4 MPH.         N 5-10 MPH.
TRANSPORT WINDS               SW 0-4 MPH.         NE 5-10 MPH.
MIXING HEIGHT                 NEAR SURFACE.       10500 FT MSL.
DISPERSION CATEGORY           POOR.               GOOD.
OUTLOOK FOR FRI AUG 1         FAIR.

VENTILATION INDEX (CATEGORY)  25 (POOR).          272 (POOR).
OUTLOOK FOR FRI AUG 1         279 (POOR).

SELECT AFTERNOON FORECAST VENTILATION INDICES FOR SOME CITIES
CLE ELUM      144 (POOR)
ELLENSBURG    357 (FAIR)
GOLDENDALE    248 (POOR)
TRI-CITIES    569 (FAIR)
WALLA WALLA   386 (FAIR)
YAKIMA        339 (FAIR)
BEND          135 (POOR)
ENTERPRISE    513 (FAIR)
HERMISTON     208 (POOR)
JOHN DAY      319 (FAIR)
LA GRANDE     162 (POOR)
MADRAS        252 (POOR)
MEACHAM       346 (FAIR)
PENDLETON     105 (POOR)
REDMOND       203 (POOR)
SENECA        321 (FAIR)
THE DALLES    166 (POOR)

METEOROLOGICAL INFORMATION PROVIDED IN THIS PRODUCT REPRESENTS ONLY
SOME OF THE FACTORS USED IN BURN DECISIONS.  BURN DECISIONS ARE
OUTSIDE THE PURVIEW OF THE NATIONAL WEATHER SERVICE.

THE VENTILATION INDEX IS A TOOL TO ASSIST SMOKE MANAGEMENT
AGENCIES IN DETERMINING BURN OR NO BURN DECISIONS.  A VENTILATION
INDEX GRAPHIC IS ON THE PENDLETON WEBSITE AT THE FOLLOWING ADDRESS:
HTTP://WWW.WRH.NOAA.GOV/PDT/FORECAST/FWXGRAPHICALVENTILATION.PHP?WFO=PDT

IF YOU WOULD LIKE TO KNOW MORE ABOUT THIS PRODUCT...CONTACT THE
NATIONAL WEATHER SERVICE IN PENDLETON.

$$





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